769 A single dose of intratumoral TransCon™ TLR7/8 agonist monotherapy promoted sustained activation of antigen presenting cells resulting in CD4+ and CD8+ T cell activation and tu... by Amer Mirza, David Rosen, Juha Punnonen, Enping Hong, Luis Zuniga, Karan Uppal, Kathy Bang, Simran Sabharwal, Yuchi Lee, Solomon Martinez